Power supply device for slide door

Abstract

To provide a power supply device for a slide door, which can be reduced in size and weight.SOLUTION: A power supply device for a slide door includes: a wire harness 10 having a crossover part 10A which bridges a vehicle body B and a slide door 500 and a door side wire routing part 10B routed at a tip of a door side edge of the crossover part; a cylindrical arm 30 supporting the door side end of the crossover part at one end of the arm and passing the door side wire routing part through a cylinder to be drawn out from a wire drawing outlet 30b on the other end to the outside of the cylinder; and a door side protector 40 that is fixed to a door inner panel of the slide door by a first stationary part 42 and a second stationary part 43, that pivotally supports a shaft such that the other end of the arm can be rotated around an axis of a rotation axis 41 and that routes the door side wire routing part drawn out from the wire drawing outlet. The rotation axis is arranged between the first stationary part and the second stationary part, and a center position of the first stationary part, a center position of the second stationary part and a center shaft of the rotation axis are horizontally arranged in a straight line.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a power supply device for a sliding door. [Background technology]

[0002] Conventionally, vehicles such as automobiles are equipped with a power supply device for a sliding door that electrically connects a power source (such as a secondary battery) on the vehicle body side to switches and electrical components on the sliding door side. In this power supply device for a sliding door, the electrical connection is performed by a wire harness, and a bridge portion of the wire harness is stretched between the vehicle body and the sliding door. For example, Patent Document 1 listed below discloses a power supply device for a sliding door that includes a link arm in which one ends of two arms are connected to each other by a hinge shaft and the other end of the bridge portion is held by the other end of one of the arms, and a door-side protector that is fixed to the sliding door and rotates the other end of the other arm around a rotation shaft. The door-side protector is fixed to the sliding door by a pair of fixing parts that are arranged substantially linearly with the rotation shaft between them. When viewed from the rotation shaft, one of the pair of fixing parts is located above the vehicle and the other is located below the vehicle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-228705 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in power supply devices for sliding doors, there is a demand for smaller and lighter sliding doors, and in this respect, there is room for improvement in conventional power supply devices for sliding doors.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a power supply device for a sliding door that can be made smaller and lighter. [Means for solving the problem]

[0006] The present invention relates to a wire harness having a crossover section spanning between a vehicle body and a sliding door, a vehicle body-side electric wire routing section routed at a tip of a vehicle body-side end of the crossover section, and a door-side electric wire routing section routed at a tip of a door-side end of the crossover section; a vehicle body-side protector fixed to the vehicle body, holding the vehicle body-side end of the crossover section, and swinging the crossover section in conjunction with the opening and closing of the sliding door; and a vehicle body-side protector supporting the door-side end of the crossover section at one end, passing the door-side electric wire routing section through a tube and pulling it out of the tube from a wire pulling-out opening at the other end. and a door-side protector that is fixed to the door inner panel of the sliding door by a first fixing part and a second fixing part, supports the other end of the arm so that it can rotate around the axis of a rotation shaft, and routes the door-side electric wire routing part that has been pulled out from the electric wire outlet, wherein the rotation shaft is disposed between the first fixing part and the second fixing part, and the center position of the first fixing part, the center position of the second fixing part, and the axis of the rotation shaft are disposed horizontally on a straight line. [Effects of the Invention]

[0007] In the power supply device for a sliding door according to the present invention, the rotation shaft of the arm is disposed between the first fixed part of the door-side protector and the second fixed part of the door-side protector, and the center positions of the first fixed part, the second fixed part, and the axis of the rotation shaft are disposed horizontally on a straight line. Therefore, the power supply device for a sliding door according to the present invention can reduce the size of the door-side protector in the vertical direction of the vehicle, thereby reducing the weight of the door-side protector. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a plan view of a power supply device for a sliding door according to an embodiment, as seen from inside a vehicle compartment, when the sliding door is in a fully closed position. [Figure 2] FIG. 2 is a plan view of the power supply device for a sliding door according to the embodiment, as seen from inside the vehicle cabin, when the sliding door is in a fully open position. [Figure 3] FIG. 3 is a plan view showing the positional relationship between the door-side protector and the arm when the sliding door is in the fully closed position. [Figure 4] FIG. 4 is a plan view showing the positional relationship between the door-side protector and the arm when the sliding door is in the fully open position. DETAILED DESCRIPTION OF THE INVENTION

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a power supply device for a sliding door according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to this embodiment.

[0010] [Embodiment] One embodiment of a power supply device for a sliding door according to the present invention will be described with reference to FIGS. 1 to 4. FIG.

[0011] 1 to 4, reference numeral 1 denotes a power supply device for a sliding door according to this embodiment.

[0012] The power supply device 1 for sliding door is mounted on a vehicle such as an automobile and supplies power from a power source on the vehicle body B to a sliding door 500 that can move back and forth in a sliding direction relative to the vehicle body B (FIGS. 1 and 2). The sliding door 500 is installed, for example, on the side of the vehicle and moves back and forth in the fore-and-aft direction of the vehicle. The power supply device 1 for sliding door is responsible for supplying power from a power source (such as a secondary battery) on the vehicle body B to an electrical connection object (not shown) on the sliding door 500. The electrical connection object is something that is installed on the sliding door 500, such as an electrical component or a switch. For example, the electrical component of the sliding door 500 refers to a drive device for driving a power window, a speaker, etc. Furthermore, the switch of the sliding door 500 refers to a switch for operating a power window, a switch for operating a power seat, etc.

[0013] The power supply device 1 for a sliding door includes a wire harness 10 (FIGS. 1 and 2). One end of the wire harness 10 is electrically connected directly or indirectly to a power source on the vehicle body B side, and the other end is electrically connected directly or indirectly to an object to be electrically connected on the sliding door 500 side. Therefore, the wire harness 10 has a bridge portion 10A that is a portion between the one end and the other end and that bridges between the vehicle body B and the sliding door 500 (FIGS. 1 and 2).

[0014] In this wire harness 10, one end of the crossover portion 10A (hereinafter referred to as the "vehicle body side end") is connected to one end on the vehicle body B side, and the other end of the crossover portion 10A (hereinafter referred to as the "door side end") is connected to the other end on the sliding door 500 side. Thus, the wire harness 10 has a vehicle body side electric wire routing portion (not shown) routed at the end of the vehicle body side end of the crossover portion 10A, and a door side electric wire routing portion 10B routed at the end of the door side end of the crossover portion 10A (FIGS. 1 and 2).

[0015] In the wire harness 10, the vehicle body side end of the crossover portion 10A is assembled to the vehicle body B side (FIGS. 1 and 2). The power supply device 1 for a sliding door is fixed to the vehicle body B and includes a protector (hereinafter referred to as the "vehicle body side protector") 20 that holds the vehicle body side end of the crossover portion 10A (FIGS. 1 and 2). The vehicle body side end of the crossover portion 10A is assembled to the vehicle body B side via this vehicle body side protector 20.

[0016] The vehicle body side protector 20 is molded from an insulating material such as synthetic resin. The vehicle body side protector 20 swings the transition portion 10A in conjunction with the opening and closing of the sliding door 500. The vehicle body side protector 20 is disposed on or near the floor surface FL of the vehicle body B in the vertical direction of the vehicle (FIGS. 1 and 2).

[0017] In addition, in the wire harness 10, the door-side end of the transition portion 10A is assembled to the sliding door 500 side (FIGS. 1 and 2). In this wire harness 10, the transition portion 10A is pulled between the door inner panel (not shown) and the door trim 501 of the sliding door 500 (i.e., inside the door trim 501), and the door-side end is assembled to the door inner panel side (FIGS. 1 and 2). The power supply device 1 for sliding door includes an arm 30 that supports the door-side end of the transition portion 10A at one end (FIGS. 1 to 4). The power supply device 1 for sliding door includes a protector (hereinafter referred to as the "door-side protector") 40 that is fixed to the door inner panel and supports the other end of the arm 30 (FIGS. 1 to 4). Note that only a portion of the door trim 501 is shown in the figures.

[0018] The arm 30 and the door-side protector 40 are molded from an insulating material such as synthetic resin. When viewed in the vehicle up-down direction, the arm 30 and the door-side protector 40 are disposed higher on the vehicle than the vehicle-body-side protector 20. When viewed in the door opening / closing direction of the sliding door 500, the arm 30 and the door-side protector 40 are disposed in the closing direction of the sliding door 500 (here, toward the front of the vehicle) when the sliding door 500 is fully closed, and in the opening direction of the sliding door 500 (here, toward the rear of the vehicle) when the sliding door 500 is fully opened.

[0019] The arm 30 is formed into a cylindrical shape. The arm 30 is formed into an L-shape along the cylindrical axis. The arm 30 supports the door-side end of the transition portion 10A with a wire inlet 30a at one end, and pulls the transition portion 10A into the cylinder from the wire inlet 30a (FIGS. 1 to 4). The arm 30 then passes the door-side electric wire routing portion 10B through the cylinder and pulls it out of the cylinder from a wire outlet 30b at the other end (FIGS. 1 to 4).

[0020] In the transition portion 10A, for example, the electric wires are covered with a corrugated tube 11 (FIGS. 1 to 4). This corrugated tube 11 is formed into a cylindrical shape and has a bellows portion 12 on its outer circumferential surface, with annular recesses 12a and annular protrusions 12b alternately arranged in the axial direction, and its end is supported by an electric wire introduction port 30a at one end of an arm 30 (FIGS. 3 and 4). For example, at one end of the arm 30, a plurality of semicircular ribs (not shown) are arranged on its inner circumferential surface, and the ribs are fitted into the recesses 12b at the end of the corrugated tube 11, thereby supporting the end of the corrugated tube 11 at the door side end of the transition portion 10A.

[0021] Here, when the sliding door 500 is fully closed, the transition portion 10A is pulled into the inside of the door trim 501 through a position below the lower end 501a of the door trim 501 and below the vehicle (FIG. 1). After being pulled into the inside of the door trim 501, the transition portion 10A is routed toward the wire inlet 30a at one end of the arm 30. When the sliding door 500 is fully closed, the transition portion 10A shown here is pulled into the inside of the door trim 501 and then routed in the closing direction of the sliding door 500 (here, toward the front of the vehicle) and toward the top of the vehicle. On the other hand, when the sliding door 500 is fully opened, the transition portion 10A shown here is pulled into the inside of the door trim 501 and then routed in the opening direction of the sliding door 500 (here, toward the rear of the vehicle) and toward the top of the vehicle. The transition portion 10A moves along the lower end 501a of the door trim 501 in conjunction with the opening and closing operation of the sliding door 500, for example.

[0022] For example, when the sliding door 500 is fully closed, the arm 30 shown here has the wire inlet 30a at one end open in the door opening direction and facing upward toward the vehicle, and the wire outlet 30b at the other end open in the door closing direction and facing upward toward the vehicle (FIGS. 1 and 3). Also, when the sliding door 500 is fully open, the arm 30 shown here has the wire inlet 30a at one end open in the door closing direction and facing downward toward the vehicle, and the wire outlet 30b at the other end open in the door opening direction and facing downward toward the vehicle (FIGS. 2 and 4).

[0023] The power supply device for sliding door 1 rotates the arm 30 around the axis of the rotation shaft 41 while following the change in the wiring path of the crossover section 10A linked to the opening and closing operation of the sliding door 500. In this power supply device for sliding door 1, the arm 30 is rotated around the axis of the rotation shaft 41 by the force received at one end from the crossover section 10A in accordance with the change in the wiring path of the crossover section 10A.

[0024] The door-side protector 40 supports the other end of the arm 30 so that it can rotate around the axis of a rotation shaft 41 (FIGS. 1 to 4).

[0025] The door-side protector 40 is fixed to the door inner panel by a first fixing portion 42 and a second fixing portion 43 (FIGS. 1 to 4). For example, the first fixing portion 42 and the second fixing portion 43 shown here are through-holes through which male screw portions are inserted, and are fixed to the door inner panel by screws.

[0026] The rotating shaft 41 is disposed between the first fixing portion 42 and the second fixing portion 43 (FIGS. 1 to 4). In this door-side protector 40, the center positions of the first fixing portion 42, the second fixing portion 43, and the axis of the rotating shaft 41 are disposed horizontally on a straight line. In this exemplary door-side protector 40, the center positions of the first fixing portion 42, the second fixing portion 43, and the axis of the rotating shaft 41 are disposed in a line in the front-to-rear direction of the vehicle. Here, the first fixing portion 42 is disposed in front of the rotating shaft 41, and the second fixing portion 43 is disposed behind the rotating shaft 41.

[0027] The arm 30 has an electric wire outlet 30b that is positioned closer to the first fixed portion 42 than the rotation shaft 41 when the sliding door 500 is fully closed, and the door-side electric wire routing portion 10B is led out from the electric wire outlet 30b between the rotation shaft 41 and the first fixed portion 42 (FIGS. 1 and 3). The door-side protector 40 routes the door-side electric wire routing portion 10B led out from the electric wire outlet 30b to the harness fixing portion 44, and routes the door-side electric wire routing portion 10B toward an object to be electrically connected that is located beyond the harness fixing portion 44. For example, the harness fixing portion 44 has two through holes 44a, 44b, and the door-side electric wire routing portion 10B is fixed in place with a cable tie 51 that is passed through the two through holes 44a, 44b (FIGS. 1 to 4).

[0028] When the sliding door 500 is fully closed, the door-side electric wire routing portion 10B, which is drawn out from the electric wire outlet 30b toward the upper side of the vehicle, is routed toward the second fixing portion 43 at the rear of the vehicle and passed between the second fixing portion 43 and the rotating shaft 41 (FIGS. 1 and 3). In other words, when the sliding door 500 is fully closed, the door-side electric wire routing portion 10B, which is drawn out from the electric wire outlet 30b toward the upper side of the vehicle, is routed around the rotating shaft 41 and then routed from between the second fixing portion 43 and the rotating shaft 41 toward the lower side of the vehicle. When the sliding door 500 is fully closed, the door-side electric wire routing portion 10B is routed toward the rear of the vehicle beyond the second fixing portion 43, and then routed to the harness fixing portion 44 located above the vehicle (FIGS. 1 and 3). That is, when the sliding door 500 is fully closed, the door-side electric wire routing portion 10B, which has been routed from between the second fixing portion 43 and the rotating shaft 41 toward the lower side of the vehicle, is routed to the harness fixing portion 44 above the vehicle while being aligned around the second fixing portion 43. In other words, when the sliding door 500 is fully closed, the door-side electric wire routing portion 10B is routed in an S-shape from the electric wire outlet 30b to the harness fixing portion 44 (FIGS. 1 and 3).

[0029] In this manner, when the sliding door 500 is fully closed, the door-side electric wire routing portion 10B is routed between the electric wire outlet 30b and the harness fixing portion 44 in an S-shape with the rotating shaft 41 and the second fixing portion 43 located inside the respective curved portions. As described above, the second fixing portion 43 is fixed to the door inner panel with a screw. Therefore, the head of a male screw member, a female screw member, or the like is present in the second fixing portion 43 inside the curved portion of the door-side electric wire routing portion 10B. Therefore, the door-side protector 40 is provided with, for example, an arc-shaped vertical wall 45 with its axis at the center position of the second fixing portion 43 between the second fixing portion 43 and the curved portion of the door-side electric wire routing portion 10B (FIGS. 1 to 4). The power supply device 1 for sliding doors uses this vertical wall 45 to surround the head of the male screw member at the second fixing portion 43, thereby preventing interference between the head of the male screw member and the door-side electric wiring portion 10B and suppressing a decrease in the durability of the door-side electric wiring portion 10B.

[0030] In the power supply device for sliding door 1, when the sliding door 500 is opened from a fully closed state, the arm 30 rotates about the rotation shaft 41, and the electric wire outlet 30b at the other end moves along the rotation shaft 41 (FIGS. 1 to 4). At this time, the electric wire outlet 30b approaches the harness fixing portion 44 while rotating about the rotation shaft 41 from a state in which the electric wire outlet 30b is open toward the upper side of the vehicle in the door closing direction when the door is fully closed to a state in which the electric wire outlet 30b is open toward the lower side of the vehicle in the door opening direction. Therefore, in the power supply device for sliding door 1, as the arm 30 rotates, the door-side electric wire routing portion 10B is pushed from the electric wire outlet 30b side between the electric wire outlet 30b and the harness fixing portion 44, causing slack in the door-side electric wire routing portion 10B (FIGS. 2 and 4).

[0031] As described above, the door-side electric wire routing portion 10B therebetween is routed in an S-shape with the rotary shaft 41 and the second fixing portion 43 located inside the respective curved portions. Therefore, in this power supply device for sliding door 1, when the sliding door 500 is opened from the fully closed state, the S-shaped door-side electric wire routing portion 10B between the electric wire outlet 30b and the harness fixing portion 44 causes the curved portion of the door-side electric wire routing portion 10B surrounding the second fixing portion 43 to bend downwardly of the vehicle (FIGS. 1 to 4). Here, by slackening the curved portion of the door-side electric wire routing portion 10B surrounding the second fixing portion 43 downwardly of the vehicle, the excess length of the wire harness 10 is absorbed when the sliding door 500 is opened or closed. In other words, when the sliding door 500 is opened or closed, the wire harness 10 can absorb the excess length when the door is opened or closed by slackening the wire harness 10 between the wire outlet 30b in the door-side wire routing portion 10B and the harness fixing portion 44.

[0032] When the door is fully closed, the door-side electric wiring portion 10B is preferably shortest with the rotary shaft 41 and the second fixing portion 43 placed inside the respective curved portions of the S-shape, and fixed by the harness fixing portion 44. This allows the power supply device 1 for sliding door to minimize the area where slack occurs in the door-side electric wiring portion 10B when the sliding door 500 is opened or closed (i.e., the area where excess length is absorbed).

[0033] Furthermore, in this power supply device for sliding door 1, when the sliding door 500 is fully closed, the S-shape of the door-side electric wire routing portion 10B is shortened, and the arm 30 is not rotated in a direction that pulls the shortest S-shaped door-side electric wire routing portion 10B. Therefore, in this power supply device for sliding door 1, the arm 30 does not receive unnecessary force from the S-shaped door-side electric wire routing portion 10B, and therefore the arm 30 can be smoothly rotated around the axis of the rotation shaft 41.

[0034] As described above, in the power supply device for sliding door 1 of this embodiment, the rotation shaft 41 of the arm 30 is disposed between the first fixed portion 42 of the door-side protector 40 and the second fixed portion 43 of the door-side protector 40, and the center positions of the first fixed portion 42, the second fixed portion 43, and the axis of the rotation shaft 41 are disposed horizontally on a straight line. Therefore, in the power supply device for sliding door 1 of this embodiment, the size of the door-side protector 40 in the vertical direction of the vehicle can be reduced, and therefore the weight of the door-side protector 40 can be reduced.

[0035] In addition, in the power supply device 1 for sliding doors of this embodiment, the rotation axis 41 is arranged between the first fixed portion 42 and the second fixed portion 43 so that the center positions of these portions and the axis center form a straight line, thereby suppressing variations in tilt when the arm 30 rotates around the axis of the rotation axis 41.

[0036] Furthermore, in the power supply device 1 for sliding door of this embodiment, the door-side electric wire routing section 10B is routed in an S-shape between the electric wire outlet 30b and the harness fixing section 44 so as to be the shortest when the door is fully closed, and the arm 30 is not rotated in a direction that pulls this shortest S-shaped door-side electric wire routing section 10B, so that the arm 30 can be smoothly rotated around the axis of the rotation shaft 41. [Explanation of symbols]

[0037] 1. Power supply device for sliding doors 10 Wire harness 10A Crossover 10B Door side electrical wiring section 20 Body side protector 30 Arm 30a wire entry port 30b Wire outlet 40 Door side protector 41 Rotation axis 42 1st fixed part 43 Second fixed part 500 sliding door B body

Claims

[Claim 1] a wire harness including a bridge portion that is bridged between a vehicle body and a sliding door, a vehicle body-side electric wire routing portion that is routed at a tip of a vehicle body-side end of the bridge portion, and a door-side electric wire routing portion that is routed at a tip of a door-side end of the bridge portion; a vehicle body side protector that is fixed to the vehicle body, holds the vehicle body side end of the transition portion, and swings the transition portion in conjunction with the opening and closing operation of the sliding door; a cylindrical arm that supports the door-side end of the transition portion at one end and passes the door-side electric wire routing portion through a cylinder and draws the door-side electric wire routing portion out of the cylinder through an electric wire drawing port at the other end; a door-side protector that is fixed to a door inner panel of the sliding door by a first fixing portion and a second fixing portion, that pivotally supports the other end of the arm so that the other end can rotate about an axis of a rotation shaft, and that routes the door-side electric wire routing portion that is drawn out from the electric wire drawing-out port; Equipped with the rotation shaft is disposed between the first fixed portion and the second fixed portion, A power supply device for a sliding door, characterized in that the center position of the first fixed part, the center position of the second fixed part, and the axis of the rotation shaft are arranged on a straight line and horizontally.

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